DEAR PAW’S CORNER: Recently, a pack of cats have started wandering on my property, especially at dawn and dusk. Two of them are wearing flea collars, with no ID tag; the rest have no identification. I don’t approach or feed them. Some of them might be my neighbors’ cats, but I don’t know. Since they started prowling my three acres, the chipmunks and birds that used to frequent the yard have disapp…